put into bmp jpg picture compression; The savings can greatly document space, in...

用于游戏开发的工具Virtools的使用,这个工具是很出名的,可以制作强大的3D效果.-for game development tools addressed the use of this tool is very well-known, it produced powerful 3D effects.

jpeg2000中的空间变换中的DWT，5/3无损小波逆变换，这是在ADI blackfin535 DSP平台下的-JPEG2000 transform space of the DWT, 5/3 non-destructive inverse wavelet transform, which is in the ADI blackfin535 DSP platform

基于神经网络的文字识别系统 本目录主要包括：文档和两个源代 其中源代码是识别程序的，另一个是矩阵类库的。已经保存了训练好的网络权值，所以第一次使用识别程序时，可以直接运行Release目录下的可执行文件，然后对图片目录中的测试图片进行读入、识别。当然也可以自行用训练样本训练网络，不过要注意训练样本的选择，否则可能识别率很低。训练样本选择的原则是，尽可能的有代表性，在训练时间不至于太长的情况下训练样本数目尽量多。-Based on neural network character recognition system catalog include: the two source documents and source code generation which is to identify the procedure, and the other is the matrix class library. Has been preserved trained network weights, so the identification procedures used for the first time, you can directly run the Release directory of the executable file, and then on the picture of the test directory to read into the picture, identification. Of course, we can use training samples to train the network, but attention should be paid to training samples, otherwise it may be very low recognition rate. Training sample selection principle is that, as far as possible have representation in the training time not too long a number of cases as many as possible training samples

关于面向对象设计的VC++源程序实例之一“轮廓提取”-on object-oriented design VC source one example "extract"

C语言的OPENVG的1.1参考实现，速度慢，可作OPENVG算法实现的参考。-C language reference implementation OPENVG 1.1, slow OPENVG algorithm can be used for reference.

Character Recognition

vchome资料库图形图像编程技术篇图形图像编程技术篇-Graphics vchome database programming technology articles programming technology articles Graphics

论文主要介绍了JPEG的编码和解码过程。该程序的编码部分能把一张BMP格式的图象进行JEPG编码，压缩成以二进制形式保存的文件；通过相应的解码程序又可以把图象解压缩出来。在图象传送过程中，我们经常采用JPEG格式对静态图象进行编码。JPEG基本系统是一种有损编码，无法完全恢复出原图象，信息有一定的丢失，称为有损压缩。尽管我们希望能够无损压缩，但是通常有损压缩的压缩比(即原图象占的字节数与压缩后图象占的字节数之比，压缩比越大，说明压缩效率越高)比无损压缩的高。JPEG编码先把图象色彩RBG变成亮度Y和色度Cr、Cb，它利用人的视觉对色度不敏感的特点，减少一部分色度数据，以达到压缩。 JPEG采取多种编码方式，包含有行程编码(Run Length Coding)和哈夫曼(Huffman)编码，有很高的压缩比。在编码前，先对数据进行分块，离散余弦变换（DCT）及量化，保留能量大的低频信号，丢弃高频信号以达到压缩。解码时，进行熵解码，反量化，反离散余弦变换（IDCT）。

使用C和OPEN GL 绘制曲线上点可控制的spline 曲线-OPEN GL using C and the curve drawn on points of the spline curve can be controlled

XNA3.0创建地形,根据McGraw.Hill.Microsoft.XNA.Game.Studio.Creators.Guide.Jun.2007.pdf第25章改写-Xna3.0 terrain，based on McGraw.Hill.Microsoft.XNA.Game.Studio.Creators.Guide.Jun.2007.pdf chapter25